Speech语音识别的一个问题，谢谢

[xiaokan1982]

using System.Speech.Synthesis;
using System.Speech.Recognition;

public static void Ear()
{
SpeechRecognitionEngine SRE = new SpeechRecognitionEngine();
SRE.SetInputToDefaultAudioDevice();
GrammarBuilder GB = new GrammarBuilder();
GB.Append(new Choices("cut", "good"));
Grammar G = new Grammar(GB);
SRE.UnloadAllGrammars();
SRE.LoadGrammar(G);
SRE.SpeechRecognized +=new EventHandler<SpeechRecognizedEventArgs>(SRE_SpeechRecognized);
SRE.SpeechHypothesized += new EventHandler<SpeechHypothesizedEventArgs>(SRE_SpeechHypothesized);
}

程序编译能过，但是运行到SRE.SetInputToDefaultAudioDevice();这句就报一个错误Value does not fall within the expected range.

请各位帮下忙，谢谢大家了，我刚接触这个还很不熟悉呢。谢谢

[xiaokan1982]

UP thanks

[哥本哈士奇]

用微软自带的？好像评价不是很好噢。

[xiaokan1982]

UP

[xiaokan1982]

UP 大家帮忙，谢谢了

[xiaokan1982]

大家帮忙，谢谢